ArticlePloS one2018
Detection of genetic alterations in gastric cancer patients from Saudi Arabia using comparative genomic hybridization (CGH).
Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Chromosomal Instability in Gastric Cancer: Role in Tumor Development, Progression, and Therapy.International journal of molecular sciences · 2023Review
- Identification of Extremely Rare Pathogenic CNVs by Array CGH in Saudi Children with Developmental Delay, Congenital Malformations, and Intellectual Disability.Children (Basel, Switzerland) · 2023Article
- Combined Assay of rDNA and SatIII Copy Numbers as an Individual Profile of Stress Resistance, Longevity, Fertility and Disease Predisposition.Journal of personalized medicine · 2022Review
- Mutational landscape of gastric adenocarcinoma in Latin America: A genetic approach for precision medicine.Genes & diseases · 2022Review
- Review
- H. pylori infection alters repair of DNA double-strand breaks via SNHG17.The Journal of clinical investigation · 2020Article
- Multifaceted Role of PRDM Proteins in Human Cancer.International journal of molecular sciences · 2020Review
- DNA Methylation Activates TP73 Expression in Hepatocellular Carcinoma and Gastrointestinal Cancer.Scientific reports · 2019Article
- Comprehensive analysis of histone modification-associated genes on differential gene expression and prognosis in gastric cancer.Experimental and therapeutic medicine · 2019Article
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Authors and funding
9 authors.
Funding
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Abstract
backgroundThe present study was conducted to discover genetic imbalances such as DNA copy number variations (CNVs) associated with gastric cancer (GC) and to examine their association with different genes involved in the process of gastric carcinogenesis in Saudi population.
methodsFormalin-fixed paraffin-embedded (FFPE) tissues samples from 33 gastric cancer patients and 15 normal gastric samples were collected. Early and late stages GC samples were genotyped and CNVs were assessed by using Illumina HumanOmni1-Quad v.1.0 BeadChip.
resultsCopy number gains were more frequent than losses throughout all GC samples compared to normal tissue samples. The mean number of the altered chromosome per case was 64 for gains and 40 for losses, and the median aberration length was 679115bp for gains and 375889bp for losses. We identified 7 high copy gain, 52 gains, 14 losses, 32 homozygous losses, and 10 copy neutral LOHs (loss of heterozygosities). Copy number gains were frequently detected at 1p36.32, 1q12, 1q22, 2p11.1, 4q23-q25, 5p12-p11, 6p21.33, 9q12-q21.11, 12q11-q12, 14q32.33, 16p13.3, 17p13.1, 17q25.3, 19q13.32, and losses at 1p36.23, 1p36.32, 1p32.1, 1q44, 3q25.2, 6p22.1, 6p21.33, 8p11.22, 10q22.1, 12p11.22, 14q32.12 and 16q24.2. We also identified 2 monosomy at chromosome 14 and 22, 52 partially trisomy and 22 whole chromosome 4 neutral loss of heterozygosities at 13q14.2-q21.33, 5p15.2-p15.1, 5q11.2-q13.2, 5q33.1-q34 and 3p14.2-q13.12. Furthermore, 11 gains and 2 losses at 1p36.32 were detected for 11 different GC samples and this region has not been reported before in other populations. Statistical analysis confirms significant association of H. pylori infection with T4 stage of GC as compare to control and other stages.
conclusionsWe found that high frequency of copy number gains and losses at 1p36.23, 1p32.1, 1p36.32, 3q25.2, 6p21.33 and 16q24.2 may be common events in gastric cancer. While novel CNVs at 1p36.32 harbouring PRDM16, TP73 and TP73-AS1 genes showed 11 gains and 2 losses for 11 different GC cases and this region is not reported yet in Database of Genomic Variants may be specific to Saudi population.
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